(19)
(11) EP 4 336 702 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.06.2025 Bulletin 2025/24

(43) Date of publication A2:
13.03.2024 Bulletin 2024/11

(21) Application number: 23206142.4

(22) Date of filing: 27.05.2022
(51) International Patent Classification (IPC): 
H02J 3/32(2006.01)
H02J 7/00(2006.01)
(52) Cooperative Patent Classification (CPC):
H02J 7/0013; H02J 7/00032; H02J 3/32; H02J 2300/24
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 27.05.2021 CN 202110585053

(62) Application number of the earlier application in accordance with Art. 76 EPC:
22175850.1 / 4096046

(71) Applicant: Huawei Digital Power Technologies Co., Ltd.
Shenzhen, Guangdong 518043 (CN)

(72) Inventors:
  • LI, Jianpeng
    518129 Shenzhen (CN)
  • LI, Yuxiang
    518129 Shenzhen (CN)
  • ZOU, Zhenghua
    518129 Shenzhen (CN)
  • HAO, Huibin
    518129 Shenzhen (CN)

(74) Representative: Gill Jennings & Every LLP 
The Broadgate Tower 20 Primrose Street
London EC2A 2ES
London EC2A 2ES (GB)

   


(54) ENERGY STORAGE SYSTEM, PHYSICAL POSITION IDENTIFICATION METHOD, AND PHOTOVOLTAIC POWER GENERATION SYSTEM


(57) This application provides an energy storage system, a physical position identification method, and a photovoltaic power generation system, and relates to the field of energy storage system technologies. The energy storage system includes at least one energy storage container, and the energy storage container includes a battery management system and m battery clusters. Third controllers corresponding to n battery packs in each battery cluster determine a first third controller connected in series, and set a physical position of the first third controller to a first physical position. An ith third controller in the third controllers corresponding to the n battery packs in each battery cluster determines a physical position of the ith third controller based on a position signal sent by an (i-1)th third controller, where i=2, 3, ..., or n. A first controller determines physical positions of remaining second controllers according to a rapid spanning tree protocol (RSTP) and a known physical position of a second controller. This solution is used, so that a misoperation is avoided, and security and reliability of the battery management system are improved.







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